@Misc{kmeans,
author = {Wikipedia},
title = {K-means clustering},
month = jun,
year = 2010,
howpublished = {\url{http://en.wikipedia.org/wiki/K-means_clustering}},
}

@Misc{pca,
author = {Wikipedia},
title = {Principal component analysis},
month = jun,
year = 2010,
howpublished = {\url{http://en.wikipedia.org/wiki/Principal_component_analysis}},
}

@Misc{r-proj,
author = {{R Foundation}},
title = {The {R} {P}roject for Statistical Computing},
howpublished = {\url{http://www.r-project.org/}},
month = {jun},
year = {2010},
}

@conference{mahala,
  title={{On the generalized distance in statistics}},
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  booktitle={Proceedings of the National Institute of Science, Calcutta},
  volume={12},
  pages={49},
  year={1936}
}

@misc{macqueen1966,
  title={{Some methods for classification and analysis of multivariate observations}},
  author={MacQueen, J.B. and others},
  year={1966},
  publisher={WESTERN MANAGEMENT SCIENCE INST UNIV OF CALIFORNIA LOS ANGELES}
}
